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Dmitry [639]
3 years ago
5

I need help with 4 of these questions

Mathematics
1 answer:
NemiM [27]3 years ago
3 0
1.
30x + 20 = y
2.
y = 60 - 10x
3.
y = .35x + 1.5
4.
y = 109 - .6x
Tell me if this helps!!
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16 2/3% of what number is 90?
zysi [14]

Answer:

540

Step-by-step explanation:

90 is 16 2/3% of 540

7 0
3 years ago
What is 30% of 25.45?
Alekssandra [29.7K]

Answer:

7.635

Step-by-step explanation:

i hope it helps:)

3 0
3 years ago
Read 2 more answers
A conditional statement is logically equivalent to a biconditional statement. True False pls help i have a test and i was absent
andreyandreev [35.5K]

Answer:

false.

Step-by-step explanation:

A conditional statement is something like:

If P, then Q.

This means that if a given proposition P is true, then another proposition Q is also true.

An example of this is:

P = its raining

Q = there are clouds in the sky.

So the conditional statement is

If its raining, then there are clouds in the sky.

A biconditional statement is:

P if and only if Q.

This means that P is only true if Q is true, and Q is only true if P is true.

So, using the previous propositions we get:

Its raining if and only if there are clouds in the sky.

This statement is false, because is possible to have clouds in the sky and not rain.

(this statement implies that if there are clouds in the sky, there should be rain)

Then we could see that for the same propositions, the conditional statement is true and the biconditional statement is false.

Then these statements are not logically equivalent.

The statement is false.

3 0
3 years ago
What is the solution?
Cloud [144]
The solution is x=16. hope it helps
8 0
3 years ago
Read 2 more answers
COMPLETING THE SQUARE<br> X^2– 2x +
Studentka2010 [4]

Answer:

x^2 -2x + 1

Step-by-step explanation:

Think of a quadratic equation as

ax^2 + bx + c

x^2 -2x +

Comparing the two equations

a = 1 ,  b = -2,  c = ?

c becomes the missing part

Divide b by 2

-2/2 = -1

square the result

-1^2

= 1  this is what to add to get a perfect square

x^2 -2x + 1

(x - 1)^2

6 0
3 years ago
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